Deme or gamodeme (local breeding population) describes a ''panmictic unit'' (Wright, 1931) or "breeding community" (Gilmour & Gregor, 1939), so yes, it says nothing directly about genetic variation/differentiation. However its widely known no two demes have identical gene-pools. As Dobzhansky pointed out - two adjacent villages with demes will even differ in their genetic frequency. So I don't see the problem with just attaching trivial or minor genetic (or phenotypic) inter-population variation to demes in terms of what is known about human biological variation. Now the simple fact is there are no human races because genetic differentiation in demes or groups of demes (meta-populations) is rather negligible. It nearly falls at Wright's "miniscule" criteria for Fst values.
Interestingly if you read this paper, the authors complain that deme should not be a word on its own (because its an add-on, such as phenodeme, topodeme, ecodeme and others). However it was most widely used to mean gamodeme and has stuck as a local breeding population/panmictic unit.
http://onlinelibrary.wiley.com/doi/10.11...2350.x/pdf
This is a semantics issue though that doesn't bother me.
Interestingly if you read this paper, the authors complain that deme should not be a word on its own (because its an add-on, such as phenodeme, topodeme, ecodeme and others). However it was most widely used to mean gamodeme and has stuck as a local breeding population/panmictic unit.
http://onlinelibrary.wiley.com/doi/10.11...2350.x/pdf
This is a semantics issue though that doesn't bother me.
